Pole for festoon drying



Oct. 12 1926.

' L. B.,CASE.

POLE FOR F'EsTooNpRYING Filed Jan. 215 1925 ao of pole embodying the invention;

Patented Oct. 12', 1926.

-A'raNr orme.

LYNN n. cAsE, or HIGHLAND PABX, NEW JERSEY, AssIGNon 'rc JOHN WALnnoN CORPORATION, OIF NEW BRUNSWICK,

NEW JERSEY, A CORPORATION F NEW:

POLE FOR FES'IOON DRYING.

Application led January 21, 1925. Serial No. 3,761.

The invention relates to poles for drying paper, cloth or other similar material. They are particularly applicable to driers ofthe festoon type in which a large number of i luniformly spaced horizontal po'les are moved by a chain, or other suitable means, along a runway or track, and -the material to be dried is suspended on the poles in a long series of festoons. 'The driers may operate in a closed heating chamber or inan open room.

According toi common practice, wooden poles are used. These have a tendency to warp and twist under the action of the heat, thus reducing the eihciency of the drier and frequently wrinkling or otherwise damaging the goods.

The principal object of the present invention is to provide a metal pole which will YS0 not be asubject to the disadvantages men-l tioned, and 'which at the' same time will avoid any contact of the metal against the material, such contact' being objectionable in many cases. 'Other objects will be apparent fromp'the following specification and claims.

In the drawing which shows the preferred embodiment of the invention,

Fig. 1 is adiagrammatic view of a drier the typeto which the invention is applicable; Fig. 2 is a broken perspective view of a Fig. 3 is a longitudinal sectional view of as the pole; and

Fig. 4 is a transverse sectional view of the po e.

1 Referring to the drawing, particularly Fig. 1, l-l representa series of poles supported 40 on a gui de or track 2. The poles are adapted to be moved along the track by any Suitable means such as a chain, not shown. The material to be dried is carried by the polesy 1 1 and hangs down in festoons as shownI at As shown in Figs. 2 to 4, the pole 1 comprises a metallic body 4, which is preferably hollow or tubular for Surrounding the body 4- is a cylindrical jacket 5 of any suitable heat insulating .or

non-metallic material.- This jacket may consist of a fabric for of a loose or cellular .fibrousmateriaL I -do not limit myself to any particular method of making the jacketv the sake of lightness.

or of putting` it in place. It is essential,

however, that the jacket fit the body tightlyv engages the guides and the driving chains'.4

I therefore provide plugs 6-6 in the ends,

which support the thin walls and prevent denting or collapsing.

With a tubular metallic pole, used either with or without a jacket,vit is desirable to provide' for the circulation`of air to the interior to assist in keeping the pole from overheating. VI therefore provide the body 4 witha number of small holes 7, which are preferably uniformly distributed. When a jacket, such as 5, .is vused it is provided with holes 8 which register with the holes '7.

From the foregoing description it will be clear that I have provided a olle which is free from the objections inci ent to wooden poles, which is light `and strong, and which will not in any way injure the material ,being dried. A plain metallic pole, properly constructed, can be used for some materials; but for most materials, a plain metallic pole would be seriously objectionyable on account of the tendency of the metal to absorb heat and transfer it to the material. This inherent objection to a plain metallic pole is overcome by my improved pole, wherein the heat-insulating jacket surrounds the metal. The jacket. prevents the pole from absorbing heat from excessively hot gases at any point, and it also prevents thej pole from transmitting an undue amount yof heat to the material.

I claim: 1. In a pole for fes'toon drying, the combination of a metallic body, and a heat insulating jacket of a cellular fibrous material surroundingthe body, whereby exchange of heat to or fromthe metal is kept at a minimum. f

. 2. In a pole for festoon drying, the combination of a metallic body of-unifo'rm diameter throughout, and a non-metallic heat insulatingr jacket surrounding the body at e the portions which engage the material to be dried, the said metallic body projecting beyond the jacket at each end, whereby it .is-adapted to engage a track or other supporting means.

8. In a pole forfestoon drying, the'combination ofa tubular metallic body with a bination of a tubularl metallic body with a nthin integral wall, a non-metallic heat insulating jacket vsurrounding the body at the portions which engage the material to be dried, the said metallic body projecting beyond the jacket at each end whereby it is adapted to engage a track or other supportng'means, and. plugs in the projecting end portions of the bo or other 'supporting means.

-5. In a pole for estoon drying, a `tubular metallic body having small holes in the"wa.ll

thereof permitting c irculationof air to thel interior.

6. In a pole bination of a for festoon drying, the com` tubular metallic bodyjhaving y for-reinforcing it at v the lpoints of engagement with the 'said track small holes in the wall thereof, and a nonmetallic jacket surroundngthe body. and having small holes vtherein registering with the holes in the. body, the said holes permitting circulation of air to the interior of, the

pole.

' LYNN n cAsE. 

